Key words to take away from this: a long time ago.

把这个关键词去掉吧：很久以前。

youdao

Education is one of the key words of our time.

教育是我们这个时代的关键词之一。

youdao

Education is one of the key words of our time.

教育教育是我们这个时代的关键词之一。

youdao

Education is one of the key words of our time.

教育教育是我们这个时代的关键词之一。

youdao